Certified Data Engineer Associate

Here you have the best Databricks Certified Data Engineer Associate practice exam questions

You have 110 total questions to study from
Each page has 5 questions, making a total of 22 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on December 20, 2024

Question 1 of 110

A data organization leader is upset about the data analysis team’s reports being different from the data engineering team’s reports. The leader believes the siloed nature of their organization’s data engineering and data analysis architectures is to blame.

Which of the following describes how a data lakehouse could alleviate this issue?

Both teams would autoscale their work as data size evolves

Both teams would use the same source of truth for their work

Both teams would reorganize to report to the same department

Both teams would be able to collaborate on projects in real-time

Both teams would respond more quickly to ad-hoc requests

Correct Answer: B

A data lakehouse addresses the issue of siloed data by providing a centralized data repository that acts as a single source of truth. This repository unifies data storage and analysis, allowing both the data analysis and data engineering teams to work with the same consistent data sets. This helps in reducing discrepancies between the reports generated by both teams, thus enhancing data consistency and alignment.

Question 2 of 110

Which of the following describes a scenario in which a data team will want to utilize cluster pools?

An automated report needs to be refreshed as quickly as possible.

An automated report needs to be made reproducible.

An automated report needs to be tested to identify errors.

An automated report needs to be version-controlled across multiple collaborators.

An automated report needs to be runnable by all stakeholders.

Correct Answer: A

Cluster pools are utilized to reduce the startup time of clusters by having pre-allocated resources ready to use. This ensures that tasks such as report refreshes can be completed more quickly and efficiently. Therefore, a scenario in which an automated report needs to be refreshed as quickly as possible is a suitable description of when a data team would want to utilize cluster pools.

Question 3 of 110

Which of the following is hosted completely in the control plane of the classic Databricks architecture?

Worker node

JDBC data source

Databricks web application

Databricks Filesystem

Driver node

Correct Answer: C

The Databricks web application is hosted completely in the control plane in the classic Databricks architecture. The control plane includes components that manage and control the Databricks environment such as the Databricks web application, the Databricks REST API, and the Databricks Workspace. The other options, like worker nodes, JDBC data sources, the Databricks Filesystem (DBFS), and driver nodes, are part of the data plane or the execution environment.

Question 4 of 110

Which of the following benefits of using the Databricks Lakehouse Platform is provided by Delta Lake?

The ability to manipulate the same data using a variety of languages

The ability to collaborate in real time on a single notebook

The ability to set up alerts for query failures

The ability to support batch and streaming workloads

The ability to distribute complex data operations

Correct Answer: D

Delta Lake provides the ability to support both batch and streaming workloads. This functionality allows efficient and seamless processing of data in real-time as well as in batch mode, making it a versatile component of the Databricks Lakehouse Platform.

Question 5 of 110

Which of the following describes the storage organization of a Delta table?

Delta tables are stored in a single file that contains data, history, metadata, and other attributes.

Delta tables store their data in a single file and all metadata in a collection of files in a separate location.

Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes.

Delta tables are stored in a collection of files that contain only the data stored within the table.

Delta tables are stored in a single file that contains only the data stored within the table.

Correct Answer: C

Delta tables are stored in a collection of files that contain data, history, metadata, and other attributes. This organization allows Delta tables to maintain a structured manner of storing data using formats like Parquet files for the actual data, while also keeping track of metadata and transaction logs in separate directories. This structure supports features such as versioning, transaction management, and metadata tracking, which are essential for Delta tables to provide ACID transactions and other advanced functionalities.